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gdb: definitions for ptrace() and syscall part of TRACEME

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This commit is contained in:
Naoki Hamada
2014-09-22 16:24:07 +09:00
committed by Tomoki Shirasawa
parent dbecaa2fc8
commit da17625be9
3 changed files with 65 additions and 15 deletions
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37
kernel/process.c
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@@ -84,12 +84,11 @@ void init_fork_tree_node(struct fork_tree_node *ftn,
/* These will be filled out when changing status */
ftn->pid = -1;
ftn->exit_status = -1;
ftn->group_exit_status = 0;
ftn->status = PS_RUNNING;
#if 1
ftn->ptrace = parent ? PT_TRACED : 0; /*debug*//*takagi*/
#endif
ftn->signal_flags = 0;
ftn->group_exit_status = 0;
ftn->ptrace = 0;
ftn->signal_flags = 0;
ftn->parent = NULL;
if (parent) {
@@ -98,9 +97,6 @@ void init_fork_tree_node(struct fork_tree_node *ftn,
INIT_LIST_HEAD(&ftn->children);
INIT_LIST_HEAD(&ftn->siblings_list);
if (parent) {
ftn->ppid_parent = parent; /*debug*//*takagi*/
}
INIT_LIST_HEAD(&ftn->ptrace_children);
INIT_LIST_HEAD(&ftn->ptrace_siblings_list);
@@ -297,12 +293,6 @@ struct process *clone_process(struct process *org, unsigned long pc,
list_add_tail(&proc->ftn->siblings_list, &org->ftn->children);
ihk_mc_spinlock_unlock_noirq(&org->ftn->lock);
/*takagi*//*debug*/
#if 1
ihk_mc_spinlock_lock_noirq(&org->ftn->lock);
list_add_tail(&proc->ftn->ptrace_siblings_list, &org->ftn->ptrace_children);
ihk_mc_spinlock_unlock_noirq(&org->ftn->lock);
#endif
/* We hold a reference to parent */
hold_fork_tree_node(proc->ftn->parent);
@@ -327,6 +317,25 @@ err_free_proc:
return NULL;
}
int ptrace_traceme(void){
struct process *proc = cpu_local_var(current);
struct fork_tree_node *ftn = proc->ftn, *parent;
ftn->ptrace = PT_TRACED;
parent = ftn->parent;
if (parent != NULL) {
ftn->ppid_parent = parent;
ihk_mc_spinlock_lock_noirq(&parent->lock);
list_add_tail(&ftn->ptrace_siblings_list, &parent->ptrace_children);
ihk_mc_spinlock_unlock_noirq(&parent->lock);
}
return 0;
}
static int copy_user_ranges(struct process *proc, struct process *org)
{
struct vm_range *src_range;